Matsushita Electric Industrial Co., Ltd.

Panasonic Corporation

Panasonic Intellectual Property Management Co., Ltd.

Hiroshi Miyai

Shigekazu Yamagishi

Katsuo Saigo

Seiji Nakazawa

Masanobu Inoe

Atsushi Hatakeyama

Tetsuro Shiota

Hitoshi Noda

Masayuki Kozuka

Yoshiho Gotoh

Akio Takimoto

Masafumi Shimotashiro

Kazuhiro Mihara

Yasunori Kuratomi

Junji Masumoto

Keizo Matsumoto

Yusaku Shimaoka

Yasuaki Muto

Hiroshi Yamaguchi

Yoshito Miyatake

Koji Akiyama

Kenichi Ikeda

Takaaki Gyoten

Yoshimasa Fushimi

Akihiro Takeuchi

Masahiro Kawashima

Hiroshi Tsutsui

Akira Ueda

Hisakazu Hitomi

Toshikatsu Kawakami

Toshikazu Kawakami

Naokazu Ogasahara

Hiroaki Satou

Dai Fujikawa

Masakazu Ogasawara

Hiroshi Noguchi

An electric cable includes at least one electric wire, and a plurality of string-shaped bodies each extending in a longitudinal direction of the electric cable and twisting with one another around the at least one electric wire being a core. The plurality of string-shaped bodies has connection parts twisting with one another excluding the at least one electric wire. The connection parts are connected to a frame of an underwater robot.

Twisted string-shaped electric cable for underwater purpose

An image signal processing apparatus performs gradation control on respective pixels. Specifically, the image signal processing apparatus includes an image signal processing unit which controls light emission and non-light emission of respective subfields so as to provide a field having a level of brightness. Here, the field is a unit display period of the pixels and divided into the subfields which have different light emission periods and are arranged in a predetermined sequence. In the predetermined sequence, the subfields are arranged in a manner such that a subfield having the shortest light emission period among the subfields is in the first place, one of a subfield having the longest light emission period and a subfield having the second longest light emission period among the subfields is in the second place, and the other one is in the third place.

Image signal processing apparatus, image signal processing method, recording medium, and integrated circuit

An image system includes: a display device configured to display an image; and an eyeglasses device for viewing the image displayed by the display device, wherein the display device includes: a display portion configured to display in time series the image to be viewed through the eyeglasses device; a signal generation portion configured to generate a synchronization signal for synchronizing timing of switching of frames of the image; and a transmission portion configured to transmit the synchronization signal, the eyeglasses device includes: an optical filter portion configured to adjust an amount of light of the image; a reception portion configured to receive the synchronization signal transmitted from the transmission portion; and a control portion configured to control action of the optical filter portion corresponding to the switching of the frames of the image, based on the synchronization signal, the signal generation portion further generates a parameter signal including action information for defining an action of the optical filter portion, the transmission portion transmits the parameter signal to the reception portion, and the control portion controls the action of the optical filter portion according to the action information of the parameter signal for defining the action of the optical filter portion.

Image system, display device and eyeglasses device used in the same

An image signal processing apparatus outputs, alternately on a-per frame basis, a first image to be displayed to one of left and right eyes of a viewer and a second image to be displayed to the other eye, and transmits, to a pair of image viewer glasses, a synchronizing signal for controlling timing of opening and closing of optical filters so as to allow the viewer to see the output frames through corresponding eyes. Specifically, the apparatus includes: a persistence amount detecting unit which detects a persistence amount indicating an effect of a first frame in the first image on a second frame in the second image and immediately following the first frame; and an optical-filter adaptive control unit which generates the synchronizing signal indicating timing of opening and closing of the optical filter corresponding to the second frame. The timing is changed based on the persistence amount detected.

A color conversion device generates color data in a second color gamut based on first converted color data and input color data, which are obtained from input color data in a first color gamut, and outputs the color data in the second color gamut. The color conversion device includes a first color mapping unit which generates the first converted color data by mapping the input color data into the second color gamut; a color mixing unit which generates color data by mixing the first converted color data and second converted color data at a ratio corresponding to the first color gamut and the second color gamut; and a color data output unit which outputs the color data.

Color conversion device, color conversion table and color conversion method

An image system comprises an image display device which displays images, and image viewing eyeglasses used for viewing images displayed by the image display device. The image display device comprises an image display device configured to display image; and image viewing eyeglasses used for viewing the image displayed by the image display device, wherein the image display device includes: a display portion configured to display the image in time series to be viewed using the image viewing eyeglasses; a synchronization signal generator configured to generate a synchronization signal in synchronization with frame of the image, the synchronization signal including prescribed bit series to transmit bit data described by the presence or absence of a pulse; and a synchronization signal transmitter configured to transmit the synchronization signal, and the image viewing eyeglasses include: an optical filter portion configured to adjust an amount of light transmitted to a left eye and a right eye of a viewer; a synchronization signal receiver configured to receive the synchronization signal transmitted from the synchronization signal transmitter; a synchronization signal analyzer configured to detect the bit series, analyze a pattern of the bit series during a predetermined detection time when the synchronization signal analyzer detects the first pulse received by the synchronization signal receiver, and generate control data to control the optical filter portion; and an optical filter controller configured to control the optical filter portion with the control data.

Image system, image display device and image viewing eyeglasses with them

An illumination apparatus includes a light source (), a first integrator () into which light from the light source () enters, and a second integrator () into which light exiting from the first integrator () enters. Accordingly, the aperture shape of the first integrator () can be optimally designed, so that the light utilization efficiency can be increased. Furthermore, even when the length of the first integrator () is reduced, a deficiency in the light uniformity due to the first integrator () is compensated for by the second integrator (), so that high uniformity can be secured at the surface to be illuminated.

Illumination device with plural color light sources and first and second integrators

A display apparatus, which makes one pixel displayable in four colors, that is, three primary colors and a white color, and inputs and displays chrominance signals corresponding to a mixing ratio of the four colors, includes a color correction instrument which performs first color correction of increasing the saturation of chrominance signals, and a second color correction of decreasing at least the saturation of the chrominance signals, when a predetermined color component exists in the chrominance signals corresponding to a pixel, selection instrument which switches temporally and selects either of first chrominance signals obtained by the first color correction, and second chrominance signals obtained by the second color correction, and a display instrument which displays the chrominance signals, which are selected, in the pixel.

Display apparatus, display method, program and recording medium

In a light source emitting single-color light represented by a solid light source such as a light emitting diode, a light output is increased while a color reproducibility is maintained. A red, a green, and a blue light emitting diode are controlled so that a first light emitting step of making the red light emitting diode emit light in a first light emission period, a second light emitting step of making the green light emitting diode emit light in a second light emission period, a third light emitting step of making the blue light emitting diode emit light in a third light emission period, and a fourth light emitting step of making the red light emitting diode, the green light emitting diode and the blue light emitting diode emit light at the same time in a fourth light emission period are carried out for display of one image.

Light emission method, light emitting apparatus and projection display apparatus

The present invention provides a presentation system, a display device, and a program which realize a smoother presentation performance in case where information a presenter wishes to refer to is displayed in a terminal but not in a display device. The presentation system of the present invention is structured, for instance, by connecting a PCand a projectorvia a LANA display unit of the PCcan be set up to display information including, for example, explanatory notes, but when making the projectordisplay an image, the information will not be displayed by executing a data modification which makes the information invisible. The information such as the explanatory notes may be placed at an arbitrary location on the display unitand this enables a smoother presentation performance.

Presentation system, a display device, and a program

Color lights from image projecting sections ( ) that enlarge and project images of red, green and blue, respectively, are made incident on a transparent screen at different angles of incidence, so that image synthesis is carried out. The color lights projected are converted into telecentric light by a Fresnel lens ( ), and after principal rays of the respective color lights are converted into substantially parallel rays by a color shading eliminating means ( ) provided with lenticular lenses on both sides thereof, the rays are incident on a light diffusing means ( ). The light diffusing means ( ) is formed with a transparent substrate sheet and a plurality of transparent micro beads made to adhere onto a light-incident surface of the substrate sheet with an opaque adhesive. Image light passes through light transmitting portions between the substrate sheet and the micro beads to be diffused. This configuration enables to provide a rear-projection image display whose display images are hardly affected by external light, which has an increased angle of visibility, and which undergoes less color shading, without a decrease in light utilization efficiency.

Rear projection type image display unit

An image display apparatus is provided for enlarging and projecting a light emitted from a plurality of self-emitting elements on a screen by beam scanning means, which is an image display apparatus having little or no luminance unevenness by solving the conventional problem of causing luminance unevenness in images projected on the screen due to a variance in luminance characteristics of each self-emitting element. It is configured such that a part of the light scanned on the screen from the beam scanning means is provided to a photodetector element that converts the intensity of the light into an electric signal so as to correct a driving signal to be supplied to the self-emitting element by the intensity of the light detected by this photodetector element.

Image display apparatus and method for compensating display image of image display apparatus

An image display device has a first look-up table memory ( ) for correcting a gamma curve of an input video signal so as to correct a gradation of a display image, a second look-up table memory ( ) for generating uniformity correction data on a screen at each gradation level, and a positional information generating portion ( ) for generating uniformity correction data corresponding to a position on the screen. A correction data making portion ( ) synthesizes the uniformity correction data output from the second look-up table memory ( ) and the uniformity correction data output from the positional information generating portion ( ). An arithmetic processing circuit ( ) corrects the video signal that has been subjected to the gradation correction and read out from the first look-up table memory ( ) by using the uniformity correction data output from the correction data making portion ( ), and the uniformity correction of the display image is performed at all gradation levels.

Image display

Three colors of light beams from a light source travel via a first optical system to strike a reflecting surface of a rotating polygon mirror, or mirrors, at different angles without overlapping. The rotating polygon mirror or mirrors reflect the light beams for scanning. The reflected light beams enter a second optical system at different angles to illuminate an image display panel at different portions. On the image display panel, belt-like regions illuminated by the light beams of individual colors are formed in parallel with each other, and these illuminated regions are moved continuously by scanning. A formed color image is magnified and projected by a projection optical system. With such a projection type image display apparatus, a display having high resolution and light efficiency that is also small, thin and inexpensive is achieved.

Color image display apparatus

A luminance correction circuit to correct areas of unevenness in luminance or color of a video image and smoothes gaps between correction blocks. The luminance correction circuit comprises a memory for storing correction data for correcting unevenness in luminance or color of video image, a timing generator for controlling read timing of the correction data from the memory, and an analog processor for processing the video signal using the correction data from the memory. A display area is divided to an appropriate number of blocks and the video signal is corrected in each block and the boundary between corrected blocks is smoothed by controlling the correction timing.

Growing community of inventors

Hyogo, Japan

Hiroshi Miyai